Suction device and suction disc

Abstract

Provided is a suction device and a suction disc capable of obtaining suction force that can control generation or disappearance of suction force through formation or disappearance of magnetic field. A suction device ( 1 A) has a suction disc ( 10 ) formed of an elastomer that is deformable by magnetic force, a support portion ( 20 ) configured to support the suction disc ( 10 ) such that the suction disc can be deformed and a suction disc deforming element ( 30 ) configured to deform the elastomer by magnetic force.

1 . A suction device, comprising:
 a suction disc having a portion formed of an elastomer that is deformable by magnetic force;   a support portion configured to support the suction disc such that the suction disc can be deformed; and   a suction disc deforming element configured to deform the elastomer by magnetic force.   
     
     
         2 . The suction device according to  claim 1 , wherein
 the elastomer is a soft magnetic elastomer; and   the suction disc deforming element is a hard magnetic body.   
     
     
         3 . The suction device according to  claim 1 , wherein
 the elastomer is a hard magnetic elastomer; and   the suction disc deforming element is a hard magnetic body.   
     
     
         4 . The suction device according to  claim 2 , wherein the hard magnetic body is an electromagnet. 
     
     
         5 . The suction device according to  claim 1 , wherein
 the elastomer is a hard magnetic elastomer; and   the suction disc deforming element is a soft magnetic body.   
     
     
         6 . The suction device according to  claim 1 , wherein the suction disc deforming element is movable relative to the suction disc. 
     
     
         7 . The suction device according to  claim 1 , wherein the suction disc has a plate shape, and a sucking surface of the suction disc has at least one of a recess and a protrusion. 
     
     
         8 . The suction device according to  claim 1 , wherein the support portion annularly supports the suction disc, in a plan view. 
     
     
         9 . The suction device according to  claim 8 , wherein the support portion has an opening that allows a space formed between the support portion and the suction disc to be led to outside. 
     
     
         10 . A suction disc that has a portion formed of an elastomer that is deformable by magnetic force, has a plate shape, and has at least one of a recess and a protrusion on a sucking surface.